I have a 2002 Chevy Pick-up, 2500 6.0 with a 4l80e that shifts hard after about 6-10 miles of freeway driving. The vehicle has a factory transmission temperature gauge and it reads around 125 degrees most of the time. It has been doing this for a 6 months and it does not seem to be heat related summer/winter driving all the same. It will shift hard (especially 1 to 2) until you shut the vehicle off for 30 seconds and then it immediately shifts fine around town until you go back on the freeway for around 15-20 miles of driving. If you shut if off then turn it right back on it will still shift hard, I have to shut the vehicle off, wait at least 30 seconds before it will shift normal. It takes longer the second time during the same day for it to start shifting hard. The first time around 6-10 miles, then the second time it takes 15-20 miles to start shifting hard of freeway use. The check engine light is not on and does not come on during this process.

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.

User Name:

Password

Please enter a password for your user account. Note that passwords are case-sensitive.

Password:

Confirm Password:

Email Address

Please enter a valid email address for yourself.

Email Address:

Insurance

Please select your insurance company (Optional)

Log-in

User Name

Remember Me?

Password

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.